Reuse core host definitions across requests

site/doc/pages/request_perf.txt

@@ -23,6 +23,8 @@ Successful first loads within the request are counted by `unit_load_count` and d
 
 The request log's `wasm-ready`, `wasm`, `workspace`, `invoke`, `collect`, and `post` fields complete the timing boundary after this in-page snapshot: compiled-artifact readiness before backend entry, native backend wall time, complete workspace wall time, entry invocation, guest-output/meta collection, and native response assembly after the backend. They do not expose request data. This distinction is useful when a completed FastCGI request takes longer than the page's mid-render `request_perf()` snapshot.
 
+Workspace birth is subdivided into `birth_policy_us`, `birth_import_us`, `birth_instantiate_us`, `birth_exports_us`, and `birth_initialize_us`. Request-context transfer reports `context_bytes`, `context_encode_us`, `context_allocate_us`, `context_write_us`, `context_guest_apply_us`, and `context_free_us`. These bounded aggregate fields expose sizes and timing only, never request values.
+
 Wasm FastCGI workers retain up to `MYSQL_PERSISTENT_POOL_SIZE` credential-keyed MySQL connections (default `8`; set `0` to disable). UCE calls the client library's connection-reset operation before another request receives a cached connection, clearing transactions, temporary tables, session variables, and selected databases while avoiding a new authentication handshake. Same-request leases continue to share state until request cleanup.
 
 :example

site/tests/core.uce

@@ -86,6 +86,16 @@ RENDER(Request& context)
 	DValue nav_dash_summary = nav_dash.filter({"title"});
 	check("DValue collection helpers", empty_pop.to_string() == "" && app_nav.is_list() && nav_titles["0"].to_string() == "Dashboard" && join(nav_dash_summary.keys(), ",") == "title" && nav_dash.values()["0"].to_string() == "app" && nav_dash.values()["1"].to_string() == "Dashboard", json_encode(nav_titles));
 
+	DValue copy_source; copy_source["nested"]["value"] = "original";
+	DValue copied = copy_source;
+	copied["nested"]["value"] = "copy";
+	DValue move_source; move_source["nested"]["value"] = "moved";
+	DValue moved = std::move(move_source);
+	DValue reference_target; DValue reference; reference.set_reference(&reference_target);
+	DValue reference_source; reference_source["nested"]["value"] = "target";
+	reference = reference_source;
+	check("DValue copy/move assignment preserves value and reference semantics", copy_source["nested"]["value"].to_string() == "original" && copied["nested"]["value"].to_string() == "copy" && moved["nested"]["value"].to_string() == "moved" && reference_target["nested"]["value"].to_string() == "target", json_encode(moved) + " / " + json_encode(reference_target));
+
 	DValue conv;
 	conv["name"] = "ada";
 	conv["count"] = "12";

site/tests/io.uce

@@ -162,7 +162,9 @@ RENDER(Request& context)
 	bool unit_module_profile_valid = serialized_reads_bounded && unit_operation_profile_valid && perf["unit_module_cache_hit_count"].to_u64() + module_misses == perf["unit_load_count"].to_u64() && serialized_hits + perf["unit_module_compile_count"].to_u64() == module_misses && perf["unit_module_lookup_us"].type != 'S' && perf["unit_module_read_us"].type != 'S' && perf["unit_module_read_bytes"].type != 'S' && perf["unit_module_parse_us"].type != 'S' && perf["unit_module_compile_us"].type != 'S' && perf["unit_module_classify_us"].type != 'S';
 	bool transport_profile_valid = perf["transport_params_us"].type != 'S' && perf["transport_input_us"].type != 'S' && perf["handler_queue_us"].type != 'S' && perf["accept_us"].to_f64() + 2 >= perf["transport_params_us"].to_f64() + perf["transport_input_us"].to_f64() + perf["handler_queue_us"].to_f64();
 	u64 phase_cpu_us = perf["workspace_setup_cpu_us"].to_u64() + perf["workspace_birth_cpu_us"].to_u64() + perf["context_apply_cpu_us"].to_u64();
-	bool workspace_cpu_profile_valid = perf["workspace_wall_us"].to_u64() > 0 && perf["workspace_cpu_us"].to_u64() > 0 && perf["workspace_cpu_us"].to_u64() <= perf["workspace_wall_us"].to_u64() + 2 && (perf["workspace_cpu_us"].to_u64() >= perf["workspace_wall_us"].to_u64() ? perf["workspace_wait_us"].to_u64() == 0 : perf["workspace_wait_us"].to_u64() + perf["workspace_cpu_us"].to_u64() == perf["workspace_wall_us"].to_u64()) && perf["workspace_setup_cpu_us"].to_u64() <= perf["workspace_setup_us"].to_u64() + 2 && perf["workspace_birth_cpu_us"].to_u64() <= perf["workspace_birth_us"].to_u64() + 2 && perf["context_apply_cpu_us"].to_u64() <= perf["context_apply_us"].to_u64() + 2 && phase_cpu_us + perf["execution_cpu_us"].to_u64() == perf["workspace_cpu_us"].to_u64();
+	u64 birth_profile_us = perf["birth_policy_us"].to_u64() + perf["birth_import_us"].to_u64() + perf["birth_instantiate_us"].to_u64() + perf["birth_exports_us"].to_u64() + perf["birth_initialize_us"].to_u64();
+	u64 context_profile_us = perf["context_encode_us"].to_u64() + perf["context_allocate_us"].to_u64() + perf["context_write_us"].to_u64() + perf["context_guest_apply_us"].to_u64() + perf["context_free_us"].to_u64();
+	bool workspace_cpu_profile_valid = perf["workspace_wall_us"].to_u64() > 0 && perf["workspace_cpu_us"].to_u64() > 0 && perf["workspace_cpu_us"].to_u64() <= perf["workspace_wall_us"].to_u64() + 2 && (perf["workspace_cpu_us"].to_u64() >= perf["workspace_wall_us"].to_u64() ? perf["workspace_wait_us"].to_u64() == 0 : perf["workspace_wait_us"].to_u64() + perf["workspace_cpu_us"].to_u64() == perf["workspace_wall_us"].to_u64()) && perf["workspace_setup_cpu_us"].to_u64() <= perf["workspace_setup_us"].to_u64() + 2 && perf["workspace_birth_cpu_us"].to_u64() <= perf["workspace_birth_us"].to_u64() + 2 && perf["context_apply_cpu_us"].to_u64() <= perf["context_apply_us"].to_u64() + 2 && birth_profile_us <= perf["workspace_birth_us"].to_u64() && perf["context_bytes"].to_u64() > 0 && context_profile_us <= perf["context_apply_us"].to_u64() && phase_cpu_us + perf["execution_cpu_us"].to_u64() == perf["workspace_cpu_us"].to_u64();
 	u64 operation_hostcalls = 0;
 	u64 operation_hostcall_us = 0;
 	u64 operation_hostcall_cpu_us = 0;